A. oil coking
B. dust accumulation
C. insufficient pressure
D. temperature is too high
Answer: A
Analysis: Coking oil will block the optical path system of the laser welding machine, resulting in a single maintenance cost of more than 500,000 yuan.
Answer: Perform a series of tests to check the discharge pressure, capacity, and energy efficiency, and compare the results with the manufacturer’s specifications.
A. Food, drugs, electronics, chemicals B. Home use, commercial use C. Oil and gas, construction, logistics D. Manufacturing, oil and gas, construction Answer: A. Food, drugs, electronics, chemicals
Answer: No, the GWL Series compressor has a reasonable structure and only generates rotational force during operation, without radial and axial forces.
A. 50% B. 60% C. 75% D. 80% answer: C analysis: Environmentally friendly oil-free air compressors reduce oil pollution, thereby reducing the frequency of filter replacement and optimizing maintenance costs.
A. A few hundred yuan to several thousand yuan B. Thousands of yuan to tens of thousands of yuan C. Tens of thousands to hundreds of thousands of yuan D. Hundreds of thousands of yuan to several million yuan Answer: B. Thousands to tens of thousands of yuan